MHT CET202313 May 2023Evening ShiftPhysicsWave OpticsActual
Of the two slits producing interference in Young's experiment, one is covered with glass so that light intensity passing is reduced to 50 % . Which of the following is correct?
Options
- AIntensity of fringes remains unaltered
- BIntensity of bright fringe decreases and that of dark fringe increases
- CIntensity of bright fringe increases and that of dark fringe decreases
- DIntensity of both bright and dark fringes decreases
Correct answer
B. Intensity of bright fringe decreases and that of dark fringe increases
Step-by-step solution
The intensity of bright fringe decreases and dark fringe increases when one slit is covered. The reason behind this is that the bright fringes are produced when the amplitudes from both slits are in phase and added constructively.